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A087057 as a simple table

na(n)
12
23
35
46
58
69
710
812
913
1015
1116
1217
1319
1420
1522
1623
1725
1826
1927
2029
2130
2232
2333
2434
2536
2637
2739
2840
2942
3043
3144
3246
3347
3449
3550
3651
3753
3854
3956
4057
4158
4260
4361
4463
4564
4666
4767
4868
4970
5071
5173
5274
5375
5477
5578
5680
5781
5883
5984
6085
6187
6288
6390
6491
6592
6694
6795
6897
6998
7099
71101

[2,3,5,6,8,9,10,12,13,15,16,17,19,20,22,23,25,26,
 27,29,30,32,33,34,36,37,39,40,42,43,44,46,47,49,
 50,51,53,54,56,57,58,60,61,63,64,66,67,68,70,71,
 73,74,75,77,78,80,81,83,84,85,87,88,90,91,92,94,
 95,97,98,99,101]